高中英语语法关于倒装的几个问题

1.Flying demands a much greater supply of energy than ____ most other forms of sportation.
A.is B.has C.that D.do

在正式文体中，then作连词时，后面的部分也需用部分倒装
这句后面如果不部分倒装则变成：than most other forms of sportation do
而半倒装就是把助动词do提前

另外，as引导的方式状语从句中也有类似用法
e.g. She travelled a great deal, as did most of her friends.
=She travelled a great deal, ass mot of her friends did.
He was a Christian, as were most of his friends.

2.Man may disappear ____ other creatures who became too specialized to survive their environment.
A.asB.just as C.as if D.as have

这里是上面说的as的倒装
意思是说人类可能像其它因为太特殊而无法在环境中生存的生物一样消失。
至于这里的助动词之所以用have是因为后面的too...to句型简化后全句可以变成：other creatures who have disappeared，所以可以把have提前

3.Early in the day came the news which the enemy were gone

这里全倒装的是came the news ，原来是the news came
而表示时间或地点的介词短语前置可以引起全部倒装

至于为什么要倒装，有些是句子特殊结构的要求，有的则是为了以一种不一样的方式出现，引人注意。至于解决头重脚轻的问题也有道理，为了保持句子平衡或突出表现谓语也会用到倒装，不过也可以把Early in the day用逗号隔开放在前面，也是很漂亮的。

4.Gladly would I pay more if I could get better service by doing so.

gladly是一个方式状语，即以很高兴的方式接受，而当方式状语、频度状语移至句首时，要半倒装

1.飞行比做其它大多数花样动作需要更多的能量供给。后半句改成：most other forms of sportation demand less supply of energy.这里的do就是用于取代demand的。
2.人类（如果）变得象其它曾经变得与环境格格不入的生物一样的话，就会（象那些生物一样从地球上）消失。后半句是说：other creatures who became too specialized to survive their environmentha have disappeared.整句可简化为：Man may disappear as other creatures have.
3.句子正常语序是： The news which the enemy were gone came early in the day.但作者原意是在强调时间early in the day(那天早早地），所以使用全部倒装以示强调时间状语。
4.与上句原因雷同。

1.为了强调对比。
2.这个句子本可以不倒装，但为了使先行词creatures与关系词连接紧密使用了倒装，因为从句的主语太长。
3.主句主语较长。为了使主句的主语the news与谓语came连接紧密同时也照顾了the news与同位语从句紧密连接使句子避免了头重脚轻。
4.大概是表示强烈的意愿，不太确定。